Introducing the Nano 3.0, our most versatile training shoe ever constructed. The evolution continues with a Dual Density platform that provides the perfect combination of forefoot cushioining and heel stabilization. We added more flexibility and protection to the outsole with Metasplit grooves and RopePro wraps on the medial and lateral sides. We carried the innovation into the upper with a new DuraCage construction for the ultimate in protection and lightweight support. Now, you are ready to take on the toughest workouts.